18965420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1721}}^1$

素因数の和:1778

約数の個数: 48

約数和(自身を含む): 43394400

約数和(自身を除く): 24428980

約数列:

[1, 2, 4, 5, 10, 19, 20, 29, 38, 58, 76, 95, 116, 145, 190, 290, 380, 551, 580, 1102, 1721, 2204, 2755, 3442, 5510, 6884, 8605, 11020, 17210, 32699, 34420, 49909, 65398, 99818, 130796, 163495, 199636, 249545, 326990, 499090, 653980, 948271, 998180, 1896542, 3793084, 4741355, 9482710, 18965420]

約数ペア:

[(1, 18965420), (2, 9482710), (4, 4741355), (5, 3793084), (10, 1896542), (19, 998180), (20, 948271), (29, 653980), (38, 499090), (58, 326990), (76, 249545), (95, 199636), (116, 163495), (145, 130796), (190, 99818), (290, 65398), (380, 49909), (551, 34420), (580, 32699), (1102, 17210), (1721, 11020), (2204, 8605), (2755, 6884), (3442, 5510)]